Most of us avoid working on PDF format while thinking that PDF documents are large in size, less interactive and less screen-oriented. So, Adobe PDF files take relatively more time to open when you exchange large presentation or page-layout files. Te get away from these problems you can reduce the actual size of PDF files by compressing text and graphics. You can make your Adobe PDF file even more compact without compromising the document's integrity. And these compressed PDF files can be opened and viewed normally by Adobe Acrobat Reader all versions.
The most remarkable advantage of reducing PDF file is to make the entire file, including images viewable at iPod, iPhone and mobile devices. It can be helpful when needing to send PDF's to coworkers or friends via email.
Here are some guidelines that one should keep in mind while reducing the .PDF document:
Reducing Graphics and Images: We all knew that an image file takes many times more the disk space than text. So reduce them or use optimized images. If you are looking for graphic image which take less space than GIF, you can opt for Vector-based graphics which look better. And if you have to insert a graphic as a bitmap, prepare it for maximum compression and minimum dimensions. Use the best quality images that you can at the output resolution of the PDF.
Use the latest version of the software: Use the latest version of the software, as there will be minor improvements in the compression algorithms and it may help you to achieve the desired results. To reduce the file size of a PDF first gets Acrobat Pro from Adobe.com. It usually does a pretty good job of shrinking PDFs.
Use the Save As command instead of Save: If you have made changes to your PDF, select Save As, instead of just Save, to save the changes in the documents. Otherwise, if you just click Save, changes are appended to your file, and youll notice a slow and steady accretion of kilobytes.
Minimize Fonts: Fonts use space, try to use minimal space and dont embed many fonts as this will increase the size of the document considerably.
Managing color: If you want the high quality of print version of your document then you should use RGB instead of CMYK. RGB uses less space than CMYK. RBG has one less data channel than CMYK, so files are that much smaller in size.
Use the PDF Optimizer: By selecting Advanced > PDF Optimizer > Audit Space Usage, you can find out which elements in your PDF (fonts? images?) are taking up the most space and make changes accordingly.